If momentum (P), area (A), and time (T) are taken to be fundamental quantities, then energy has the dimensional formulaa) $P^{1}A^{-1}T^{1}$b) $P^{2}A^{1}T^{1}$c) $P^{1}A^{-1/2}T^{1}$d) $P^{1}A^{1/2}T^{-1}$